Your cart is empty.
Your cart is empty.The JHS Pedals Summing Amp gives you the ability to take two inputs and blend them into one output. Simply plug into the two marked inputs and then plug in your single output and you’re ready to go. From two signals the Summing Amp creates one mono signal. This is perfect for putting effects in parallel so that they are not affected by one another. The Edge used this technique in the 80s with his delays. When you have a quarter note delay and a dotted eighth delay and you place them in parallel then sum them back together, the effect is that both delays come through more clearly and are not “delaying the delays”. This can also be used with overdrives so that they are not pushing each other as in series, but sit atop one another in parallel. Another use is combining fuzz and compression in parallel so the fuzz isn’t getting choked by the compression. The Summing Amp gives you the ability to use effects together in completely new ways that you may never have imagined and can open up new and inspiring sounds with your old effects. This simple little box takes two inputs and creates one output but it adds up to a whole lot more!
Stephen VanMuyden
Reviewed in the United States on September 11, 2023
I needed it so I forked over the money. It's a little expensive for what it is though.
Customer
Reviewed in the United States on March 31, 2023
I have to assume that people in these reviews getting mad about the bass guitar warning didn’t actually try the pedal. 2 points to make:1) only very hot basses are going to be breaking a 10v threshold anyway, and2) this pedal is very likely sitting at or near the end of your pedal chain, so if it’s clipping, then down the volume on one the pedals feeding it and compensate with amp volume.I’ve got 2 of these on my bass board (and my bass is very hot) and they’re both doing fine. Simple pedal providing a necessary service in certain chain configurations.
Ronnie D
Reviewed in the United States on January 25, 2023
Only after purchasing the JHS pedals summing amp will you find on the leaflet that came with the unit it is not recommended for bass guitars.I am a bassist and that information is to important to be left out. No were on JHS site or amazon states it is not recommended for bass guitars. now i am out $85.
MGG
Reviewed in the United States on November 17, 2021
It just does the job you need. Coupled with the buffered splitter you can create new interesting parallel signal chains.
MPH
Reviewed in the United States on September 16, 2020
Not the sort of box everyone needs, but super handy if you do. I have a rig where I needed to merge two parallel stereo effects paths down to one stereo output. My solution was to use two JHS Signal Blenders - one for the two right channels, and one for the two left. Those output a single right and left to amps.I had been using a passive cable setup before, but it lead to volume drops in certain effect path configurations upstream. Adding active buffered signal blenders totally fixed that problem. Output is solid and consistent right to left, regardless of what's at the input. Just plug and play - right on unity gain and even balance of the inputs.
Mister Tough Guy
Reviewed in the United States on August 15, 2020
Started using the Summing Amp in conjunction with the JHS Active ABY splitter. Have one clean channel and one for my effects, which I run through an NS-2, and recombine at the splitter before EQ and amp. About 2 weeks in I started getting a huge whine and buzz. Spent the last 3 weeks pulling apart my board and trouble shooting every concievable combination of pedals, swapping cables, guitars, amps, power supplies(all isolated), full-on mouse chase for the source. Narrowed it down to the combination of JHS Summing Amp and JHS ABY. Eliminate one and the siren is gone. Such a waste of time. Return windows just closed, so I'll contact JHS directly and see what the deal is, but if no joy, then probably going to sell them on reverb cheap and let the next sucker curse JHS too.If you cant use them together, the the Summing Amp it has little purpose. Guess I threw my time and money down a hole.
My Honest Review
Reviewed in the United States on February 19, 2020
Handy took to combine signals ( such as from a dual wireless receiver) with out gain or switch controlsFairly transparent ( to my ear, in my system) used in a complex system on an arena/ stadium tour
Steve Pierson
Reviewed in the United States on January 22, 2020
This review is for the Summing Amp. Despite a price a bit more than I wanted to pay, I bought this thing to solve a very specific problem. I have a stomp box electronic drum pedal that I want to chain in with my guitar so I can drum along with myself through a single guitar amp. This means some kind of Y. I've tried a simple splitter, a Y with resistors, and the simple circuit you get when you google "summing op amp." The problem is, the drum pedal has a BIG ol 2uf (two, not point oh two) tone capacitor inside to give it a deep deep bass drum voice. All the simple solutions let the drum tone cap suck all the highs out of the guitar. This JHS Summing Amp does the trick though. Two ins, one out, nothing else, and my two incompatible signals are blended together just fine. It would be nice if it had an internal battery and cost twenty bucks, but you can't have everything.
Recommended Products
